About the Authors

Ying Zhang

Affiliation Department of Health Systems Administration, Georgetown University, Washington, District of Columbia, United States of America

Hugo Lopez-Gatell

Affiliation National Institute of Public Health, Cuernavaca, Mexico

Celia M. Alpuche-Aranda

Affiliation National Institute of Public Health, Cuernavaca, Mexico

Michael A. Stoto

stotom@georgetown.edu

Affiliation Department of Health Systems Administration, Georgetown University, Washington, District of Columbia, United States of America

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Conceived and designed the experiments: MAS YZ. Performed the experiments: MAS YZ. Analyzed the data: MAS YZ. Contributed reagents/materials/analysis tools: MAS YZ HLG CAA. Wrote the paper: MAS YZ HLG.